Automatic bobbin-exchanging device for looms.



A.` G. KOBGHLIN, AUTOMATIG'BOBBIN BXGHANGING DEVICE PoR Looms.

'APPLICATION FILED 00T. 5, 1911.

Patented Oct. 15, 1912.

" FIG NxTNESSES,

UNITED sTATEs PATENT OFFICE.

ALBERT GEonG xoEcHLrN, E EAsEL. SWITZERLAND, AssIGNon 'ro sPINNEnEI a wEBEnEr -srEINEN AcrrEN-GEsELLsoHAEr, or srEINEN, BADEN, GERMANY. p

AUTOIIIATIC BOBBIN-EXCHANGING DEVICE IOR LOOKS. .L E

Specication of Letters Patent.

Application mea oc'tqbe: 5, 1911. serial No. 652,954.

lic, and resident of Basel, Switzerland, haveA invented new and useful Improvements in Automatic Bobbin-Exchanging Devices` for i Looms, of which the Vfollowing a full,

clear, and exact specication.-

Since the useA of loomsfhavweft spool or bobbin change as become more usual, a great variety of ty es of magazine. havebeen suggested in which the weft spools or bobbins are stored before being used, and'a great variety of, transferring mechanisms have been suggested for conveying these spools or bobbins from the magazines to the usual transferrer. The magazines hitherto known are either of the well known revolver ty'pe or are arranged as fixed uare chambers in which the spools or bobbins rest singly in grooves or runways and in which movable members are arranged such as naps, movable channels and the like proved and which always keep the weftspools or bobbins separated from one another until they pass to the usual. transferrer. All magazines of the last kind feed a revolver type i drum lying-underneath them wherebythe nerally passed, to this *drum* s ools are t ough a"c osed channel.

The present invention relates to an imgreatly simplified weft spool magazine whleh is speciall adapted for directly conveying the spoos to the usual transferrer andv moreover the arrangement of. the conveying or guideway from the ma azine tothe transferrer is a'greatly sim-'` ed one.

In the bobbin exchanging device according to the present invention the weft bob-v bin magazine consists of a box without any inner partition-wall, butl provided in the well known manner with a sloping base. In this box theweft bobbins are freely located one over thel other, and a stationary restraining wed e is arranged internally at .the front si e of the box above a lower exit openin for the bobbins in order to holdvback e bobbins, to sustain their pressure from above and from b hind and to break up or separate the layers one from the other. A guide for the spools of :the lower layer is arranged on the base ofthe box. Further- I more, the bobbns'lying o n the guide channel from the. magalzlne to the transferrer are automatic relieved of the greater part of the pressure of the resty of the s ools in the magazine as the part of the guidechannel, contlguous to the base of the box liessomewhat beneath the exit opening it. Owing to this arrangement of guide channel, the spools or bobbins passi along it can move forward smoothly Patentedoet. 15,1912.

and wlthout'hindrance and the guide-chaninvention. -Fig. 2 is a Aplan view of. theearne. Fig. 3. is acrosssect-ion on the line A-B of Fig. 1. Fig. 4 is'a sectionalelevation, and Fig. 5 is a planvview of a second constructional form. Fig. 6 showsa third Aconstructi-onal form.

In the drawing, a- (Figs. 1-3) is a xobpartition-wall, in which the weft spools or obbins are arranged inlayers parallel one above the other. The width `of the box a corresponds approximatelyo the length of the .f'bobbins.- This box is' provided the 'well' known manner "with a v sloping'. basev long box open at the top without any inner leading to an exit opening b for the bobbins at the front end o'f the box. On the inner sidey of the front wall -of thel box. a is arranged -above the opening -b anfinternally protruding stationary retaining wedge c which "forms an inner guide-channel ahead of the opening b and at'the same time serves to free the opening fromthe pressure ofthe bobbins from behind and vfrom above and also to separate the layers of bobbins press- ,ing forward so that the bobbins pass singly 4 to the exit opening b'.

A guide raild is arranged on the base of this box a which serves to guide the bobbins ofgathe lowest layer as the head`of the bobbinsslides along said rail al (Fig. 3). This rail prevents the bobbins from lying oblquely across the Hoor of the boxa and ins'nres that thel bobbin passing forward always be in a straight position. In order to prevent two bobbins from passing at the same timethrough the opening b of 'the inu'gazine box a, this is provided on the outside 'with a retaining flap e which issuspended on a iixed point'and by its own weight is so limited in its outward movement that it just allows of the escapement- .of one bobbin at a time.

A transferring lguide channel f is 'arranged passing'from the box a to the filling place under the u sual \ti;ansferrer g. The part of this bhannel lying contiguoirsto the lopening Z1 has' a slope somewhat correspond ing in inclination'to the base ofthe box orv receptacle a, but lies lsomewhat below it.' This is so that the bobbinsfon the transferring channel will be at least relieved ofthe greater part of the, pressure of the bobbinsin the magazine sothat they may easily and without hindrance slide on tothe transferl ring channel. They are'guided on the above mentioned part ofjhe transferring channel which consists` of," an open and accessibleLv groove (see Fig.' 1), by means of a guide round. The exit opening b1 of the magazine may also be arranged .on the base'- of the bobbin box a instead of in the front wall, as 'shown in Fig. The remaining details of construction are the saine as stated above except that in this case the front retaining flap is not necessary. v

"inauv-rthefabove inentioiid aises the bobbins are brought from the Amagazine to the VAtransferrer directly, -that is to say without @he .iluXliar'y aidofI a revolving transporting drum. y 1.

An important di'erence betweenithe 'i `scribed arrangements and those hitherto "tot lmown applies in that there areno bobbin partitions or movabley parts in the magazine and nevertheless the bobbins are arranged singly therein and straightly conveyed one by one-to the desired position where theyare pushed by the usual transferrer into the working shuttle of the loom. The bobbins are after the weft thread ends have been wound round the end of the weft carrier in the known way, or btherwise, attached thereto'7 freely laid by the operator into the magazine which may be of any size without any special vertical guiding for the bobbinsyand this box may then be directly transferred on the loom. y

Finally, several modifications ina lbe men- 'tioned Theinclinaln of themba 'e of th' box or magazine and the vvpart of the transl ferring channel abutting against it may be altered according to requirements. What I claim 1s: 1. ln an automatic weft bobbin exchang-- Aing device for looms, a bobbin magazine consisting of a box without any inner partition 'wall for receivingiafplurality of superposed 'layers of bobbins, said box having a slightly 'the latter'from the pressure of the other bobbins in the box and to separate the bobbin layers near said opening, saidbox being provided atits 'base with a guide rail for the bobbins ofthe lowest layer, gavctransferrer for transferring the bobbins intov the working shuttle and an inclined guide-channel for 'conveying the bobbins from 'the boxdirectly kso to said transferrer,..said guidechannel havy c ing its end contiguous to thebox somewhat below 'the base thereof, substantially as and for the purpose described. l v l 2. In an automatic weft bobbin exchanging device for looms, a bobbinmagazine con-4 sisting of a box withoutany inner partition wall for receiving a plurality of superposed layers of bobbins,`said box having an inclinedlbase and being yrovidedfabove lan exit openin for the bobbins with an internally protru ing retaining wedge, forming an inner guide-channel aheadof said'opening and designed to relieve the bobbins near the latter from the pressure of the other bobbins in t-he box and to separate the bobbin layers near said opening, said boxbeing provided at its base with 'a guide rail for theA bobbins of the lowest' layer,a*'trans`ferrer `for trans-z 'ferring the bobbins .into the working shuttle and an inclined guide-channel for conveying the ybobbins from the v,box direotlytoffsaid transferrer, said guide-channel -havingv its a 4end cgntiguousfto the box somewhat'below the base thereof, and-being falsd provided with a guide rail for the bobbins to keep the'rn in their correct position, substantially as and for the purpose described.

3. In an automatic weft bobbin exchang ing device for looms, a bobbin magazine, con-Y l sisting of a box without 'any inner wallfor receiving a pluralityvo superposed layers of bobbins, said box having an inclined base and being provided above an exit. opening for the bobbins with the internally protrud-v ing retaining wedge, forming an inner guide channel ahead of said opening and designed to relieve the bobbins near the latter from the pressure of the other bobbinsin the box,

and to separate the bobbin layers near said opening, said box being provided at its base with a ide rail for the bobbins'of the lowt-faye "i, a transierrerfor transferringthe bobbins into the working shuttle and an `inclined guide-channel forvconveying the bob! bins fromthe box directly to said transferrer, said guide-channel having its end contiguous to the box somewhat below the base thereof, a retaining flap being arranged on the outside of the exit opening in the box, substantially as and for the purpose described.

` 4. In 'an automatic weft bobbin-exchanging device for looms, a bobbin magazine conslsting of a box Without any inner partition Wall for receiving a plurality of superposed layers of bobbins, said boX having a slightly inclined base and being provided above an 'exit opening for the bobbins with an internally protruding stationary retaining Wedge, forming anvinner guide-channel ahead of said opening and designed'to relieve the bob-.

bins near the latter from the pressure of the other bobbins in the box and to separate the bobbin layers near said opening2 said box bebelow the base thereof, substantially as andk for purpose described.

In Witness whereof I have hereunto signed my naine this 23d day of September 1911, in the presence of two subscribing Witnesses.

ALBERT GEORG KOECHLIN.

lVitnesses:

GEO. GIFFORD, AMAND BRAUN,

Copies o1 this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

